RDFa

W3C, Cambridge, Massachusetts, United States

RDFa (Resource Description Framework in Attributes) is an extension to HTML5 that embeds structured metadata within page content by adding attributes based on the RDF data model.

It uses HTML attributes such as "vocab", "typeof", and "property" to describe entities like people, places, events, recipes, and reviews, supports multiple vocabularies such as Schema.org, Dublin Core, and GoodRelations, and is one of the structured data formats supported by Google alongside JSON-LD and Microdata.

According to our data, RDFa is the 7th most popular semantic markup format on the web.
It is detected on 0.7% of all websites. *

It appears on 2.3% of all websites in Belgium, 1.2% in France, and 1% in Spain.

Statistics based on 4M+ analyzed websites. About this data
Please note that we don't detect RDFa via <meta property="..."> tags. These tags are also used by Open Graph, so including them would skew the statistics. Leaving them out helps identify websites that use RDFa intentionally.

📊 Rankings and Market Share

🏆 RDFa Awards

⚡ Sites Using RDFa

We have data on 27,532 websites that use the RDFa semantic markup format. Here is a list of some of the top ranked ones.

The highest rated site using RDFa is instructure.com.

#WebsiteRankCountryLanguage
1 instructure.com #43 United States English
2 irs.gov #131 United States English
3 canada.ca #132 Canada English
4 nih.gov #163 United States American English
5 en.wikipedia.org United States English
6 mit.edu #295 United States English
7 apps.apple.com United States American English
8 itunes.apple.com United States American English
9 support.apple.com United States American English
10 punjab.gov.pk #974 Pakistan English
11 education.gouv.fr #1,071 France French
12 ardmediathek.de #1,090 Germany German
13 tagesspiegel.de #1,132 Germany German
14 jharkhand.gov.in #1,202 India English
15 uwaterloo.ca #1,226 Canada English
16 es.wikipedia.org United States Spanish
17 mediawiki.org #1,357 United States English
18 gba.gob.ar #1,460 Argentina Spanish
19 incometax.gov.in #1,504 India English
20 developer.mozilla.org United States American English

📈 Usage Statistics

Most of the sites that use RDFa:

Most of the sites using RDFa are from the United States, Germany, and France.

  • United States 16.1%
  • Germany 7.7%
  • France 6.7%
  • United Kingdom 4.7%
  • Spain 4.3%
  • Russia 4%
  • Italy 3.9%
  • Canada 3.4%
  • Belgium 3.1%
  • Other 46.1%

Most RDFa users speak English, German, or French.

  • English 45.6%
  • German 7.6%
  • French 7.5%
  • Spanish 5.1%
  • Russian 5%
  • Dutch 3.3%
  • Italian 3%
  • Japanese 2.2%
  • Greek 1.9%
  • Other 18.8%

The RDFa semantic markup format is especially popular on .com and .org top-level domains.

  • .com 28.4%
  • .org 10.8%
  • .de 4.9%
  • .fr 3.2%
  • .ru 2.9%
  • .it 2.4%
  • .net 2.2%
  • .ca 2.1%
  • .be 2.1%
  • Other 41%

The primary market segments for websites utilizing RDFa include business, education and reference, and marketing and merchandising.

  • Business 18.5%
  • Education/Reference 12.2%
  • Marketing/Merchandising 8.5%
  • Online Shopping 5.6%
  • Health 5.2%
  • Non-Profit/Advocacy/NGO 5%
  • Government/Military 4.5%
  • Blogs/Wiki 3.9%
  • Travel 3.7%
  • Other 32.9%

🕵️ Similar Technologies

These are some of the best RDFa alternatives.

RankName
1
Open Graph
Menlo Park, California, United States

A web metadata standard that defines how webpages are described as structured objects for use in social graphs and enables their consistent representation.
2
Twitter Cards
Bastrop, Texas, United States

A metadata format used by X, originally Twitter, that enables links in posts to display rich previews with images, videos, and interactive media to increase engagement and traffic.
3
JSON-LD
Cambridge, Massachusetts, United States

A lightweight linked data format used to embed structured data into web pages in a machine-readable form.
4
Microdata
Cambridge, Massachusetts, United States

An HTML specification used to embed structured metadata within web page content by annotating elements with machine-readable attributes.
10
GoodRelations
Neubiberg, Germany

A standardized vocabulary for product, price, store, and company data that can be embedded into web pages and processed by search engines and other data-consuming services.

🆚 Compare Alternatives

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💬 Frequently Asked Questions

What is the company behind RDFa?

RDFa is owned by World Wide Web Consortium, Inc., headquartered in Cambridge, Massachusetts, United States.

Which country uses RDFa the most?

The majority of RDFa users are from the United States.

Who uses RDFa?

According to our data, RDFa is used on thousands of sites, including such established ones as instructure.com, irs.gov, and canada.ca.

Is RDFa used on government websites?

Yes, for example, it is used by irs.gov, nih.gov, and punjab.gov.pk. Overall, we found RDFa on 194 government sites in the United States.

Do academic institutions use RDFa?

Yes, quite a few! The most prominent of these is mit.edu. In total, we know of 239 academic websites in the United States that use RDFa.

How does RDFa compare to its competitors?

RDFa is a moderately popular semantic markup format, ranking ahead of 4 other semantic markup formats we track.

What are the alternatives to RDFa?

Alternatives and possible competitors to RDFa may include JSON-LD, Microdata, and GoodRelations.

👉 See Also

🗃️ About This Data